Question

`BCl_3` molecule is planar while `NCl_3` is pyramidal because
A. `BCl_(3)` has no lone pair of electrons but `NCl_(3)` has a lone pair of electrons
B. B-Cl bond is more polar than N-Cl bond
C. Nitrogen atom is smaller than boromatom
D. N-Cl bond is more covalent than B-Cl bond

Answer 1

Correct Answer - A

Answer 2

Option (A) is the correct answer.

In NCl₃ molecule , there is a lone pair of electron. As per VSEPR theory this lone pair electron repel the bond pair to change its shape from 2D planar to 3D pyramidal shape.